Locking slide for slide fasteners



Aug. 22, 1950 N. N. NEGRICH LOCKING sums FOR sums FASTENERS Filed Aug. 22, 1946 rich INVENTOR ATTORNEYS M WM 1 @3 m; M w .w.

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Patented 22, 1950 UNITED STATES PATENT OFFICE LOCKING SLIDE FOB SLIDE FASTENERS Nick Neil Ncgrich, Winnipeg, Manitoba, Canada Application Anmt 22, 1946, Serial No. 692,280

3 Claims.

My invention relates broadly to slides for zipper tracks, and more particularly to a means for locking the slide at any selected position along the track.

An important object of my invention is the provision of a slide for a zipper track, wherein the slide is provided with a locking means movable into .or out of engagement with the fastener elements ofthe track and with means for holding the said locking means in either of the mentioned positions.

Another object of my invention is the providing of a device of the above mentioned character that is simple and compact in its construction and that iseilicient and efficacious in the lower ends thereof having spaced parallel-"side edges I9 and and being of sufficient width to overlay the 'zipper track when the fastener elements are interlockingly engaged with each other. The upper ends of the plate are formed with diverging side edges 2! and 22 which permit the stringers and their respective fastener elements to extend from the slide at opposite sides of the connecting end wall [8. The opposite edges of each of the plates l6 and II are formed with flanges 23 and 24 which ride along the outer ends of the fastener elements and guide the same as they pass between the upper tion will be apparent during the course of the following description.

In the drawing, forming a part of this specification, and wherein like numerals are employed to designate like parts throughout the same,

Figure 1 is a top plan view of a slide embodying my invention and showing the same associated with a zipper track, parts of the slide being broken away for clearness of illustration,

Figure 2 is a longitudinal sectional view taken on the line 22 of Figure l,

Figure 3 is a transverse sectional view taken on the line 3-3 of Figure 2,

Figure 4 is a longitudinal sectional view taken on the line 4-4 of Figure l and showing the pull member in the locking position,

Figure 5 is a view similar to Figure 4 but showing the pull member in the raised or unlocking position, and

Figure 6 is an exploded perspective view of the several parts of the slide.

In the accompanying drawing, wherein for the purpose of illustration, is shown a preferred embodiment of my invention, the numeral I0 designates an article, such as a garment, to which a zipper track ll may be attached. The zipper track is constructed in the conventional manner and includes stringers l2 and i3 extending along the edges of the garment for carrying spaced claws or fastener elements [4. The fastener elements interlock to hold stringers in spaced parallel relation and to close the opening in the garment in the manner well known to those skilled in the art.

The present invention resides in the unique and novel construction of the slide l5, which is adapted to travel along the zipper track and to coact with the fastener elements l4 to move the same into either looking or detached relation with each other. The slide comprises spaced upper and lower plates I 6 and I! connected at their upper end by the integral and wall I 8. The plates are of identical formation in plan, the

and lower plates of the slide.

A box-like housing 25 is mounted on the upper plate It substantially centrally thereof. The housing includes an essentially rectangular top 26, end walls 21 and 28 and side walls 29 and 30. The bottom of the housing is open to receive the upstanding projections 3|, which projections are struck from the upper plate and bent upwardly therefrom whereby the distal ends thereof will be positioned slightly above the plate to support the bridging leaf spring 32 in spaced parallel relation therewith. As best illustrated in Figures 4 and 5, the leaf spring extends longitudinally of the housing for substantially its entire length, and the end walls 21 and 28 abut but do not connect with the ends of the spring to hold the same against longitudinal sliding movement on the projections. As best illustrated in Figure 1, the side walls 29 and 30 of the housing are arranged in slight spaced parallel relation with the side edges of the leaf spring to hold the same against lateral shifting movements on the projections.

The housing may be attached to the upper plate IS in any suitable manner; however, I have here illustrated the end walls 21 and 28 as being provided with extending shanks 33 and 34. The shank 34 is relatively longer than the shank 33, the shank 33 being adapted to extend to the upper plate only and the shank 34 being adapted to extend to both the upper and lower plates in the manner illustrated in Figure 4. The end of the shank 33 is bent to underlay the upper plate and the end of the shank 34 is bent to underlay the lower plate to securely hold the housing against displacement.

A pull member 35 is pivotally carried by the housing and constitutes means adapted to be manually grasped to effect manual movement of the slide along the zipper track. The pull member comprises an essentially rectangular plate having an elongated substantially rectangular opening 36 at one end thereof. The transversely extending portion 31 of the plate closing one end of the opening is adapted to exthe opening a will accommodate the portion of the homing extending at either side of the openings II. The portion ll of the pull member closing the other end of the opening extends for a substantial distance beyond the housing to provide a fingerpiece which may be manually grasped for moving the slide along the track.

The side walls of the housing are preferably slit as illustrated in Figure 6 whereby the portions of the walls at the opposite sides of the slits may be bent outwardly to permit the pull member to be introduced into the openings 38. The outwardly bent portions are then bent to the original position to securely hold the pull member pivotally disposed in the openings.

The portion 81 f the pull member is arranged above the leaf spring 32 intermediate the projections II and it is provided at substantially its middle with a longitudinally extending lip ll having a flat end ll. A lug 42, formed on the pivoted end of the pull member exteriorly of the housing 2!, extends through the elongated slot 0 in the upper plate when the pull member occupies the position illustrated in Fi ure 4. In this position of the pull member, the bottom face of the transverse portion 31 and of the projecting lip ll will lie flatly against the upper face of the leaf spring 32 and the lug 42 will extend through the slot ll to be interlockingly received between adjacent fastener elements II. The resilient action of the leaf spring will positively act a ainst the pull member to hold the same a ainst pivoting movement and consequently. to hold the lug 42 in interlocking relation with the attaching elements. If the pull member is pivoted to move the end face ll of the lip 40 into confronting relation with the top surface of the leaf spring, the spring will be flexed to the position illustrated in Figure 5 and the log 42 will be swung upwardly through the slot 43 and out of engagement with the fastener elements. In this position of the pull m mber the resilient action of the leaf spring will react a ainst the pull member to hold the same in the unlocked position.

It may thus be seen that the unique position and correlation of the leaf spring relative to the pull member will provide a positively acting means for holding the pull member in either a looking or unlocking position. In the locking position the lu l2 will be securely held in interlocking relat on with the attaching elements H and the resili nt action of the spring will hold the same a ainst pivoting movement to release the slide. Similarly. movement of the pull member to the osition illustrated in Fi ure 5 will permit the slide to be easilv moved along the zipper track. and the resilient action of the spring will hold the same in this position to prevent inadverently pivotal movement thereof to permit en agement or partial engagement of the lug with the attaching elements. This novel and simple arran ement permits the several parts to be compactly assembled and permits the entire arrangement to occupy a minimum of s ace.

It is to be understood that the form of my invention, herewith shown and described, is to be taken as a preferred example of the same, and that various chan es in the size, sha e and arrangement of parts may be resorted to without departing from the spirit of my invention, or scope of the appended claims.

, 4 LA'slideforaaippm-trackhavingfastener elements comprising pp r and lower-plates arranged at opposite sides of the fastener elements, spaced projections upstanding from said upper plate, a leaf spring bridging the projections, a container secured-to the upper plate and enclosing the spring member, a pull member pivotally carried by the container, and a lip attached to the pull member and extending transversely above the leaf spring, said lip being provided with right angularly di posed flattened faces adapted -to selectively engage the leaf spring whereby the pull member may be moved'about its pivot to position one or the other of the flattened faces against the leaf spring to hold the pullmember in the selected positions.

2. A slide for a zipper track having fastener elements comprising upper and lower plates arranged at opposite sides of the fastener elements, spaced projections upstanding from said upper plate, a leaf spring bridging the projections, supporting members upstanding from the upper plate at opposite sides of the spring member retaining the same on the projections, a pull member pivotally carried by the supporting members, a part extending from said pull member transversely above the leaf spring, said part being provided with right angularly disposed flattened faces, whereby movement of the pull member about its pivot will position one or the other of the flattened faces against the leaf spring and whereby the resilient action of the spring will press against the confronting face to hold the pull member in the selected position, and a lug extending from the pull member and adapted to project through an opening in the top plate to interlockingly engage with the fastener elements when the pull member is in one position and to swing upwardly out of engagement with the fastener members when thepull member is in the other of the mentioned positions.

3. In a slide for a zipper track having fastener elements, upper and lower guide plates movable along the track, a boxlike housing mounted on the upper plate, spaced projections extending from the said upper plate and into the housing at substantially the ends thereof, a leaf spring bridging the projections, the housing retaining the spring in position on the projections, a pull member plvotally mounted in the side walls of the housing, and a transverse portion on said pull member and overlying the leaf spring intermediate the projections, said transverse portion having right angularly disposed flattened faces movable into confronting relation with the spring upon rocking of the pull member about its pivots to hold a lug extending from the pull member in or out of engagement with the fastener elements of the zipper track, the resilient action of the said spring reacting against the confronting face of the said transverse portion to hold the pull member in either of the mentioned positions.

NICK NEIL NEGRICH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Date Number Name 2,131,567 Marinslry Sept. 2'1, 1938 2,261,133 Grant Nov. 4, 1941 2,290,834 Kohler July 21, 1942 

